Advertisement
meson (n.)
subatomic particle, 1939, from Greek mesos "middle" (from PIE root *medhyo- "middle") + subatomic particle suffix -on. Earlier mesotron (1938). So called for being intermediate in mass between protons and electrons. An earlier use of the word, from the Greek noun meson "center," meant "the medial plane which divides the body into two equal and symmetrical parts" (by 1883).
updated on December 30, 2018
Advertisement
Advertisement
Dictionary entries near meson
Mesoamerica
mesocracy
mesoderm
mesolithic
mesomorph
meson
Mesopotamia
mesosphere
mesothelioma
Mesozoic
mesquite